/* Modern Professional Portfolio - Ankita Gupta */
:root {
    --primary-color: #1a1a1a;
    --secondary-color: #2d2d2d;
    --accent-color: #00d4ff;
    --accent-dark: #0099cc;
    --success-color: #00ff88;
    --danger-color: #ff006e;
    --light-text: #f0f0f0;
    --dark-text: #ffffff;
    --border-color: #444444;
    --shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.5);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Roboto', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    color: var(--dark-text);
    background-color: #121212;
    line-height: 1.6;
}

/* ===== Navigation Bar ===== */
.navbar {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    padding: 1.5rem 0;
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar-brand {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--accent-color) !important;
    letter-spacing: 1px;
}

.navbar-nav .nav-link {
    color: var(--light-text) !important;
    margin-left: 2rem;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

.navbar-nav .nav-link:hover,
.navbar-nav .nav-link.active {
    color: var(--accent-color) !important;
}

.navbar-nav .nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-color);
    transition: width 0.3s ease;
}

.navbar-nav .nav-link:hover::after {
    width: 100%;
}

/* ===== Hero Section ===== */
.hero-section {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: var(--light-text);
    padding: 60px 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 20% 50%, rgba(0, 212, 255, 0.1) 0%, transparent 50%),
                radial-gradient(circle at 80% 80%, rgba(0, 255, 136, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 2;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 0.3rem;
    text-transform: uppercase;
    letter-spacing: 3px;
    animation: fadeInDown 0.8s ease;
}

.hero-subtitle {
    font-size: 1.8rem;
    color: var(--accent-color);
    margin-bottom: 0.3rem;
    font-weight: 600;
    animation: fadeInUp 0.8s ease 0.2s both;
}

.hero-description {
    font-size: 1rem;
    margin-bottom: 1.5rem;
    color: #b0b0b0;
    animation: fadeInUp 0.8s ease 0.4s both;
}

.hero-socials {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    animation: fadeInUp 0.8s ease 0.6s both;
}

.social-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: rgba(0, 212, 255, 0.1);
    border: 2px solid var(--accent-color);
    color: var(--accent-color);
    font-size: 1.3rem;
    transition: all 0.3s ease;
}

.social-btn:hover {
    background: var(--accent-color);
    color: var(--primary-color);
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 212, 255, 0.3);
}

/* ===== Section Styles ===== */
.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    text-transform: uppercase;
    text-align: center;
    margin-bottom: 2rem;
    position: relative;
    color: var(--light-text);
    letter-spacing: 2px;
}

.section-title i {
    margin-right: 0.8rem;
    color: var(--accent-color);
}

.section-title::after {
    content: '';
    display: block;
    width: 100px;
    height: 4px;
    background: linear-gradient(90deg, var(--accent-color), var(--success-color));
    margin: 1rem auto 0;
    border-radius: 2px;
}

/* ===== About Section ===== */
.about-section {
    padding: 50px 0;
    background: #1e1e1e;
}

.about-content {
    max-width: 800px;
    margin: 0 auto;
    font-size: 1.1rem;
    line-height: 1.8;
    text-align: center;
    color: #cccccc;
}

.about-content p {
    margin-bottom: 1rem;
}

.about-content strong {
    color: var(--accent-color);
}

/* ===== Skills Section ===== */
.skills-section {
    padding: 50px 0;
    background: #121212;
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.skill-card {
    background: #2d2d2d;
    padding: 1.5rem;
    border-radius: 12px;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    border-top: 4px solid var(--accent-color);
}

.skill-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
    border-top-color: var(--success-color);
}

.skill-card h3 {
    font-size: 1.2rem;
    color: var(--light-text);
    margin-bottom: 0.8rem;
    display: flex;
    align-items: center;
    gap: 0.8rem;
}

.skill-card i {
    color: var(--accent-color);
    font-size: 1.5rem;
}

.skill-card p {
    color: #cccccc;
    font-size: 0.95rem;
    line-height: 1.6;
}

/* ===== Experience Section ===== */
.experience-section {
    padding: 50px 0;
    background: #1e1e1e;
}

.experience-timeline {
    max-width: 900px;
    margin: 0 auto;
}

.experience-card {
    background: #2d2d2d;
    border-left: 4px solid var(--accent-color);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    border-radius: 8px;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    position: relative;
}

.experience-card::before {
    content: '';
    position: absolute;
    left: -16px;
    top: 40px;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--accent-color);
    border: 3px solid white;
    box-shadow: 0 0 0 4px var(--accent-color);
}

.experience-card:hover {
    transform: translateX(10px);
    box-shadow: var(--shadow-lg);
}

.experience-card:hover {
    border-left-color: var(--success-color);
}

.experience-card:hover::before {
    background: var(--success-color);
    box-shadow: 0 0 0 4px var(--success-color);
}

.experience-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 1rem;
    flex-wrap: wrap;
}

.experience-title {
    flex: 1 1 60%;
}

.company-logo {
    flex: 0 0 auto;
    display: flex;
    align-items: center;
    justify-content: center;
}

.company-logo img {
    max-height: 52px;
    width: auto;
    display: block;
}

.experience-header h3 {
    font-size: 1.2rem;
    color: var(--light-text);
    margin-bottom: 0.2rem;
}

.company {
    color: var(--accent-color);
    font-weight: 600;
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
}

.date {
    color: #999;
    font-size: 0.95rem;
    display: inline-block;
    margin-bottom: 1rem;
}

.experience-body ul {
    list-style: none;
    padding-left: 0;
}

.experience-body li {
    color: #cccccc;
    margin-bottom: 0.8rem;
    padding-left: 25px;
    position: relative;
    line-height: 1.6;
}

.experience-body li::before {
    content: '▸';
    position: absolute;
    left: 0;
    color: var(--accent-color);
    font-weight: bold;
}

/* ===== Projects Section ===== */
.projects-section {
    padding: 50px 0;
    background: #121212;
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 1.5rem;
}

.project-card {
    background: #2d2d2d;
    border-radius: 12px;
    padding: 1.5rem;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
}

.project-card:hover {
    transform: translateY(-15px);
    box-shadow: var(--shadow-lg);
}

.project-icon {
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 212, 255, 0.14);
    border-radius: 50%;
    font-size: 1.5rem;
    color: var(--accent-color);
    margin-bottom: 1rem;
}

.project-card h3 {
    font-size: 1.3rem;
    color: var(--light-text);
    margin-bottom: 0.5rem;
}

.project-role {
    color: var(--accent-color);
    font-weight: 600;
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

.project-description {
    color: #cccccc;
    margin-bottom: 1.5rem;
    flex-grow: 1;
    line-height: 1.6;
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.tech-badge {
    display: inline-block;
    background: linear-gradient(135deg, var(--accent-color), var(--accent-dark));
    color: white;
    padding: 0.4rem 0.8rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
}

/* ===== Education Section ===== */
.education-section {
    padding: 50px 0;
    background: #1e1e1e;
    color: white;
}

.education-timeline {
    max-width: 900px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
}

.education-card {
    background: #2d2d2d;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 12px;
    padding: 1.5rem;
    display: flex;
    gap: 1rem;
    transition: all 0.3s ease;
}

.education-card:hover {
    background: rgba(255, 255, 255, 0.15);
    transform: translateY(-10px);
}

.education-icon {
    font-size: 2.5rem;
    color: var(--accent-color);
    flex-shrink: 0;
}

.education-content h3 {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--light-text);
}

.education-institution {
    font-size: 0.95rem;
    opacity: 0.9;
    margin-bottom: 0.5rem;
}

.education-date {
    font-size: 0.85rem;
    opacity: 0.7;
}

/* ===== Contact Section ===== */
.contact-section {
    padding: 50px 0;
    background: #1e1e1e;
}

.contact-content {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.contact-content p {
    font-size: 1.1rem;
    color: #cccccc;
    margin-bottom: 2rem;
}

.contact-links {
    display: grid;
    grid-template-columns: repeat(5, minmax(180px, auto));
    justify-content: center;
    gap: 1.5rem;
}

.contact-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.8rem;
    padding: 1rem 2rem;
    min-width: 180px;
    background: linear-gradient(135deg, var(--accent-color), var(--accent-dark));
    color: white;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.contact-btn:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(0, 212, 255, 0.3);
    color: white;
}

/* ===== See More Button ===== */
.see-more-btn {
    display: block;
    margin: 2rem auto 0;
    padding: 0.8rem 2rem;
    background: linear-gradient(135deg, var(--accent-color), var(--accent-dark));
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.see-more-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(0, 212, 255, 0.3);
}

.hidden {
    display: none;
}

/* ===== Footer ===== */
.footer {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: var(--light-text);
    text-align: center;
    padding: 1.5rem 0;
    margin-top: 2rem;
}

/* ===== Animations ===== */
@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ===== Responsive Design ===== */
@media (max-width: 768px) {
    .hero-title {
        font-size: 2.5rem;
    }

    .hero-subtitle {
        font-size: 1.3rem;
    }

    .section-title {
        font-size: 1.8rem;
    }

    .navbar-nav .nav-link {
        margin-left: 0;
        padding: 0.5rem 0;
    }

    .experience-card {
        margin-left: 20px;
    }

    .experience-card::before {
        left: -32px;
    }
}